are well organized into tight uniform pyramids. To boot, one sees a fibrous structure in the warts, also seemingly out of place with mushrooms that should have powdery/grainy UV deposits. So on one hand, Cystolepiota seems unlikely.

This obs does remind me of Echinoderma asperum.

But…

Phillips say’s C. adulterina cap surface has cottony warts at first. A few internet photos labeled C. adulterina show a fair amount of UV organization into pointed warts. The mushrooms seen in this obs look to be wet. So I’m wondering if moisture may affect the way the deposits form/appear.

BTW, Alonso. Nice photos! We can see the details very clearly. But I do agree with Danny about the vote bombing stuff. I do not wish to lend support to this approach. SO I withdraw my vote here.

is, as far as I understand, a genus characterized by powdery veil remnants adorning the pileus and stipe. This ornamentation appears much more sturdy/persistent. Perhaps Echinoderma, but else’s is the opinion that matters most here.

Agreed that it does not resemble either of the two described species of Leucopholiota. Uploader has not included any notes, so substrate is still unknown. Uploader also is anon vote bombing every idea other than his own.